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Doppler physics

Myrthe van der Ven, Maren C Karreman, Angelique E A M Weel, Ilja Tchetverikov, Marijn Vis, Tamar E C Nijsten, Johanna M W Hazes, Jolanda J Luime
OBJECTIVES: Part of the psoriasis patients with musculoskeletal complaints will have inflammation of the entheses. Entheseal inflammation is difficult to assess by clinical examination only. Therefore, we aimed to determine the frequency of clinically relevant ultrasound inflammation at the most commonly assessed entheses (MASEI; Madrid Sonographic Enthesis Index) in primary care psoriasis patients with one or more tender entheses. METHODS: Adult primary care psoriasis patients with musculoskeletal complaints (tender enthesis or arthritis at physical examination) had an ultrasound examination of seven entheses according to the MASEI...
September 8, 2016: Clinical and Experimental Rheumatology
Andrey Karpenko, Vladimir Starodubtsev, Pavel Ignatenko, Alexander Gostev
OBJECTIVE: The aim of our study was to compare immediate and long-term results of endovascular interventions for the treatment of steno-occlusive disease of subclavian arteries (SAs) depending on the length of lesion. MATERIALS AND METHODS: Between 2010 and 2013, we performed 245 endovascular procedures to treat patients with atherosclerotic steno-occlusive disease of SAs. All patients were examined and subdivided according to the received results into 2 groups: 125 patients with stenosis of SA were included in the first group and 120 patients with occlusion of SA were included in the second group...
October 12, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Jean-Guillaume Meusnier, Charles Dewar, Erti Mavrovi, Frederic Caremil, Pierre-Francois Wey, Jean-Yves Martinez
BACKGROUND: Junctional hemorrhage (i.e., between the trunk and limbs) are too proximal for a tourniquet and difficult to compress. These hemorrhages are responsible for 20% of preventable deaths by bleeding on the battlefield. The majority of these involve the groin area. Devices allowing a proximal compression for arterial axes have been recently developed. OBJECTIVE: The purpose of this study was to compare the use of two junctional- tourniquet models, the Combat Ready Clamp (CRoC®) and the SAM® Junctional Tourniquet (SJT), in simulated out-of-hospital trauma care when tourniquets were ineffective to stop the arterial flow...
2016: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
F Lotti, G Corona, G Castellini, E Maseroli, M G Fino, M Cozzolino, M Maggi
STUDY QUESTION: Is sexual dysfunction associated with severity of semen quality impairment in men with couple infertility? SUMMARY ANSWER: In males of infertile couples the prevalence of erectile dysfunction (ED) increases as a function of semen quality impairment severity. WHAT IS KNOWN ALREADY: Infertile men are at a higher risk for sexual dysfunction, psychopathological and general health disorders. However, it has never been systematically investigated if these problems are associated with severity of semen quality impairment...
October 12, 2016: Human Reproduction
Elisa Maseroli, Egidia Fanni, Sarah Cipriani, Irene Scavello, Francesca Pampaloni, Cesare Battaglia, Massimiliano Fambrini, Edoardo Mannucci, Emmanuele A Jannini, Mario Maggi, Linda Vignozzi
INTRODUCTION: The relation between sexual and cardiovascular health in women is not well defined. Clitoral color Doppler ultrasound (CDU) with assessment of the pulsatility index (PI), reflecting resistance to blood flow, has been proposed as an objective measurement of sexual functioning. AIM: To investigate associations between clitoral PI and cardiometabolic risk factors, sexual and intrapsychic parameters, and self-perception of body image. METHODS: Seventy-one adult heterosexual women in a stable relationship attending our clinic for sexual dysfunction were consecutively recruited...
September 27, 2016: Journal of Sexual Medicine
Dace Reihmane, Martin Gram, Andreas Vigelsø, Jørn Wulff Helge, Flemming Dela
Physical inactivity is a major contributor to low-grade systemic inflammation. Most of the studies characterizing interleukin-6 (IL-6) and tumour necrosis factor-α (TNF-α) release from exercising legs have been done in young, healthy men, but studies on inactivity in older people are lacking. The impact of 14 days of one-leg immobilization (IM) on IL-6 and TNF-α release during exercise in comparison to the contralateral control (CON) leg was investigated. Fifteen healthy men (age 68.1 ± 1.1 year (mean ± SEM); BMI 27...
November 2016: European Journal of Sport Science
Ben M Sörensen, Alfons J H M Houben, Tos T J M Berendschot, Jan S A G Schouten, Abraham A Kroon, Carla J H van der Kallen, Ronald M A Henry, Annemarie Koster, Simone J S Sep, Pieter C Dagnelie, Nicolaas C Schaper, Miranda T Schram, Coen D A Stehouwer
BACKGROUND: -Type 2 diabetes (T2DM) is associated with an increased risk of cardiovascular disease (CVD). This can be partly explained by large artery dysfunction, which already occurs in prediabetes ('ticking clock hypothesis'). Whether a similar phenomenon also applies to microvascular dysfunction is not known. We therefore tested the hypothesis that microvascular dysfunction is already present in prediabetes and is more severe in T2DM. To do so, we investigated the associations of prediabetes, T2DM, and measures of hyperglycemia with microvascular function measured as flicker light-induced retinal arteriolar dilation and heat-induced skin hyperemia...
September 27, 2016: Circulation
M Alharbi, A Husakou, M Chafer, B Debord, F Gérôme, F Benabid
Trapping or cooling molecules has rallied a long-standing effort for its impact in exploring new frontiers in physics and in finding new phase of matter for quantum technologies. Here we demonstrate a system for light-trapping molecules and stimulated Raman scattering based on optically self-nanostructured molecular hydrogen in hollow-core photonic crystal fibre. A lattice is formed by a periodic and ultra-deep potential caused by a spatially modulated Raman saturation, where Raman-active molecules are strongly localized in a one-dimensional array of nanometre-wide sections...
2016: Nature Communications
Jason R Sims, Maurice Enriquez-Sarano, Hector I Michelena
CLINICAL INTRODUCTION: A man in his 50s presented with abscessed aortic valve methicillin-sensitive Staphylococcus aureus endocarditis, received intravenous antibiotics and underwent bioprosthetic aortic valve replacement with removal of all infected tissues. He returned 18 days later with severe dyspnoea, subjective fever and bilateral lower extremity oedema. Physical examination revealed tachypnoea and tachycardia without fever, prominent neck CV waves visible at 90°, left parasternal heave, 3/6 holosystolic murmur across the precordium, lung rales and severe peripheral oedema...
September 15, 2016: Heart: Official Journal of the British Cardiac Society
Gregory Marslin, Bruno Filipe Carmelino Cardoso Sarmento, Gregory Franklin, José Alberto Ribeiro Martins, Carlos Jorge Ribeiro Silva, Andreia Ferreira Castro Gomes, Marisa Passos Sárria, Olga Maria Fernandes Pereira Coutinho, Alberto Carlos Pires Dias
Curcumin is a natural polyphenolic compound isolated from turmeric (Curcuma longa) with well-demonstrated neuroprotective and anticancer activities. Although curcumin is safe even at high doses in humans, it exhibits poor bioavailability, mainly due to poor absorption, fast metabolism, and rapid systemic elimination. To overcome these issues, several approaches, such as nanoparticle-mediated targeted delivery, have been undertaken with different degrees of success. The present study was conducted to compare the neuroprotective effect of curcumin encapsulated in poly(ε-caprolactone) and methoxy poly(ethylene glycol) poly(ε-caprolactone) nanoparticles in U251 glioblastoma cells...
September 14, 2016: Planta Medica
Muhammed Afsal, Veena Chowdhury, Anjali Prakash, Sapna Singh, Neera Chowdhury
PURPOSE: Traditionally, peripheral nerve lesions are diagnosed on the basis of clinical history, physical examination, and electrophysiological studies, and the role of imaging studies has been limited. The purpose of the study was to assess the usefulness of sonography in diagnosing peripheral nerve lesions. MATERIALS AND METHODS: Thirty adult patients with peripheral nerve lesion/s and 30 healthy adult volunteers were included in the study, and sonography of the relevant peripheral nerve/s was done...
September 2016: Neurology India
Yang Xu, Donald Darga, Jason Smid, Adam M Zysk, Daniel Teh, Stephen A Boppart, P Scott Carney
In this Letter, we report the first application of two phase denoising algorithms to Doppler optical coherence tomography (DOCT) velocity maps. When combined with unwrapping algorithms, significantly extended fluid velocity dynamic range is achieved. Instead of the physical upper bound, the fluid velocity dynamic range is now limited by noise level. We show comparisons between physical simulated ideal velocity maps and the experimental results of both algorithms. We demonstrate unwrapped DOCT velocity maps having a peak velocity nearly 10 times the theoretical measurement range...
September 1, 2016: Optics Letters
Masataka Kawamura, Sohei Kuribayashi, Gaku Yamamichi, Kosuke Nakano, Nozomu Kishimoto, Koichi Tsutahara, Go Tanigawa, Tetsuya Takao, Seiji Yamaguchi
We report a prenatal case of neonatal testicular torsion. A 0-day-old boy with left scrotal swelling from the time of birth was referred to us. The physical examination revealed left intrascrotal hard mass. The ultrasonography with doppler color flow showed heterogeneous parenchymal echogenicity and the lack of blood flow to the affected testis. Testicular torsion was suspected and emergent surgical exploration was performed. The left testis was necrotic with extravaginal torsion of the spermatic cord. Left high orchiectomy was performed, considering the possibility of inguinal hernia...
July 2016: Hinyokika Kiyo. Acta Urologica Japonica
Dylan C Sieck, Matthew R Ely, Steven A Romero, Meredith J Luttrell, Pedro M Abdala, John R Halliwill
Adequate cerebral perfusion is necessary to maintain consciousness in upright humans. Following maximal anaerobic exercise, cerebral perfusion can become compromised and result in syncope. It is unknown whether post-exercise reductions in cerebral perfusion can lead to visual-cognitive deficits prior to the onset of syncope, which would be of concern for emergency workers and warfighters, where critical decision making and intense physical activity are combined. Therefore, the purpose of this experiment was to determine if reductions in cerebral blood velocity, induced by maximal anaerobic exercise and head-up tilt, result in visual-cognitive deficits prior to the onset of syncope...
August 2016: Physiological Reports
William R VanWye, Jase Pinerola, Karen Craig Ogle, Harvey W Wallmann
BACKGROUND AND PURPOSE: Screening for referral, regardless of setting, is the responsibility of all physical therapists. A serious condition that sports physical therapists may encounter is upper extremity (UE) deep venous thrombosis (DVT), which can result in the important and sometimes fatal complication of pulmonary embolism. CASE DESCRIPTION: A 22 year-old male right-hand dominant collegiate pitcher was referred for physical therapist evaluation and treatment secondary to acute right UE pain and swelling...
August 2016: International Journal of Sports Physical Therapy
P Vicini, S Di Nicola, G Antonini, E De Berardinis, V Gentile, F De Marco
We present the use of a modified corporoplasty, based on geometrical principles, to determine the exact site for the incision in the tunica or plaque and the exact amount of albuginea for overlaying to correct with extreme precision the different types of congenital or acquired penile curvature due to Peyronie's disease. To describe our experience with a new surgical procedure for the enhancement of penile curvature avoiding any overcorrection or undercorrection. Between March 2004 and April 2013, a total of 74 patients underwent the geometrical modified corporoplasty...
August 11, 2016: International Journal of Impotence Research
Roman Leischik, Birgit Dworrak, Fabian Sanchis-Gomar, Alejandro Lucia, Thomas Buck, Raimund Erbel
Over the last 60 years, echocardiography has emerged as a dominant and indispensable technique for the detection and assessment of coronary heart disease (CHD). In this review, we will describe and discuss this powerful tool of cardiology, especially in the hands of an experienced user, with a focus on myocardial ischemia. Technical development is still on-going, and various new ultrasound techniques have been established in the field of echocardiography in the last several years, including tissue Doppler imaging (TDI), contrast echocardiography, three-dimensional echocardiography (3DE), and speckle tracking echocardiography (i...
July 2016: Annals of Translational Medicine
Fida Bacha, Samuel S Gidding, Laura Pyle, Lorraine Levitt Katz, Andrea Kriska, Kristen J Nadeau, Joao A C Lima
OBJECTIVE: To investigate the relationships of cardiac structure and function with body composition and cardiorespiratory fitness (CRF) among adolescents with type 2 diabetes in the Treatment Options for Type 2 Diabetes in Adolescents and Youth study. STUDY DESIGN: Cross-sectional evaluation of 233 participants (median age 18.3 [min-max 12.4-24.2] years, 63% females, median hemoglobin A1c 6.8%) who had echocardiography measurements of left ventricular (LV) mass, ejection fraction, left atrial dimensions, LV diastolic function (early transmitral flow velocity to early mitral annular velocity ratio from tissue Doppler imaging), and right ventricular function (tricuspid annular plane systolic excursion [TAPSE]) and body composition (dual-energy x-ray absorptiometry) and CRF (cycle ergometry determination of physical work capacity at heart rate of 170 beats per minute)...
October 2016: Journal of Pediatrics
Keisuke Nakanishi, Naonobu Takahira, Miki Sakamoto, Minako Yamaoka-Tojo, Masato Katagiri, Jun Kitagawa
Patients with plaster-cast immobilization of the lower limb have an estimated venous thromboembolism rate of 2.5 % without prophylaxis, which includes many fatal cases. However, there is no practical physical prophylaxis for deep-vein thrombosis (DVT) in these patients. The aim of this study was to examine the effects of intermittent pneumatic compression on the thigh alone (IPC to the thigh) on peak blood velocity (PBV) in the legs and to consider the possibility that IPC of the thigh could be used as physical prophylaxis for DVT in patients with plaster-cast immobilization of the lower leg...
November 2016: Journal of Thrombosis and Thrombolysis
Chih-Hsuan Chang, David J Nesbitt
A series of CH stretch modes in phenyl radical (C6H5) has been investigated via high resolution infrared spectroscopy at sub-Doppler resolution (∼60 MHz) in a supersonic discharge slit jet expansion. Two fundamental vibrations of a1 symmetry, ν1 and ν2, are observed and rotationally analyzed for the first time, corresponding to in-phase and out-of-phase symmetric CH stretch excitation at the ortho/meta/para and ortho/para C atoms with respect to the radical center. The ν1 and ν2 band origins are determined to be 3073...
July 28, 2016: Journal of Chemical Physics
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